Finding the Third Proportional to 711,142 and 1,080,536

Step by Step Solution

1. Step 1: Write the proportion equation
   711,142 : 1,080,536 = 1,080,536 : x
2. Step 2: Convert to fraction form
   711,142/1,080,536 = 1,080,536/x
3. Step 3: Cross multiply
   711,142x = 1,080,536 × 1,080,536
4. Step 4: Simplify right side
   711,142x = 1,167,558,047,296
5. Step 5: Solve for x
   x = 1,167,558,047,296/711,142
6. Step 6: Final answer
   x = 1,641,807.19